English to Russian Other Metallurgy / Casting

Что означает ilmenite smelters в таком предложении: Pig iron that is co-produced with minerals sands participates in the global market for merchant pig iron (MPI). MPI is cold (solid) pig iron that is either:
• produced by dedicated merchant plants (including ilmenite smelters) for sale to third parties, or
• blast furnace iron produced by integrated steel mills that is surplus to internal requirements and thus cast into ingots and sold to third parties

Это плавильные печи?